Fluid-pressure regulator.



E. SGHULTE. FLUID PRESSURE REGULATOR. APPLICATION FILED K0129, 190v.

93?,72L Patented m 19, mm.

2 EEEETSBHEBT 1.

E. SGHULTE,

FLUID PRESSURE REGULATOR.

7 APPLICATION FILED NOV. 29, 1907. I g'g 'igl o v Patented Oct. 19,1909.

2 SHEETS-SEEM. 2.

81mm wkoz EDWARD SCHULTE, 9F HAMBT, WESTPHALXA,

regulating system for a '1 and 2, referred to herein as Q on l.

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GERMANY, ASSIGNSR TO UNITED COKE AND GAS COMPANY, A COBPGRATIUN GF'WESE.VIEGENIA.

lELUI-D PEESSUEE To (ZZZ whom it may concern:

Be rt known that l, EnUAnu a subject of the Emperor of Germany, residingin Hamm i. 5 Germany, have invented a certain new and useful Improvementin Fluid-Pressure Regulators, of which the.

following is a specification.

This invention has relation to an 1mproved form of electric reversingswitchadapted to operate by changes in fluid pressure, particularly foruse in connection With automatically controlled blowing or suction.machinery.

One principal object of this invention is the provision ofsimple andeli'ective mechanism whereby the results desired may be made operativeby very small changes in fluid pressure; and in this connection, thepreferred form of my invention is made adjustable, not only forinitially accommodating a given regulating device to a given wir'or gaspumping apparatus, but also for quickly compensating, from time to time,for minor changes in Working conditions.

A preferred illustrative embodiment or" this invention is shown in theaccompanying ra-Wings, Wherein Figure l is a vertical central section.of my automatic governing switch, Fig. 2 is a plan view of the same andFig. 3 shows e .group of two blowers.

In Fig. 3 are shown two air or gas mains, the supply main 1 and thedelivery maln 2. One or more blowers or pumps are employed "intransferring the air or gas from the supply tothe'delivery main, and inFig. 3, tWO of these are showne t 3 and t. Each blower is driven by anappropriate prime mover, as

for instance, the steam engines 5 and 6,

which transmit'poWer-by belts Z and 8 or.

otherwise. The 5 engines is supplied by pipes 10 and H valves 12 and13-.

This invention 2am for driving these from the steam main 9 is applicableto a system -wherein a separate electric motor is used for plurality ofprime movers. This system is Specification of Letters Iratent. fi iginalapplication filed April 3, 1392, Serial Ito. 386,163. hivified and thisapplication riled November 29 eel-nu no.

leading to appropriate- Pettented. trot recs.

plied at proper intervals with Worms 'lil engaging Worm Wheels 17 (onefor each prime mover. The shaft 18 of each Worm Wheel 1 operates one orthe other oi tne valves l2, l3

in a- ,vvell known manner, so that, when the shaft revolves in. onedirection it Will slowly open the valves 12, 13, simultaneously, and it-'will close these valves when turned in the opposite direction. Theelectric motor lfl is normally at rest and it is made to run in onedirect-ion or the other when required for regulation of the system, bymeans of the automatic governing switch shown in Figs. 1 and 2.

The-mode of use of the governing switch and its adjuncts Will dependupon Whether it is desired to regulate pressure in the sup-- ply main 1.or in the delivery main the pressure or the gas Within the supply mainis to be regulated then the entrance pipe l9 shown in Figs; 1 end 2 mustbe connected to the su ply main. If the pressure of the gas delivered isto be regulated, the pipe 19 must be connected to the delivery main,

The pipe 19 leads to the lower part 20 of a casing 21, the upper partofwhich is open to the atmosphere, as by the opening 22. The two parts ofthe specs Within the casing 21 are horizontally divided by a flexible ormovable diaphragm preferably composed of d solid central disk 23supported by a corrugated annular strip-of flexible material, 24, suchas thin leather.

Upon a standard 25, fixed to the top of the casing 21 a balancing beamis supported, which beam is preferably composed 01 two light metalframes 26 27 joined by insulating cross pieces and sunported upon thestandard 25 by the knife edge 29.

The Weight of the disk 23 is partly supported by the suspension bar 30attached to the dislt preferably at its C(.llt1,'-Wlill1 bar is proyidedat its upper end with :1 knife edge 31, resting upon an appropriateinsulatlng' cross piece 32 vhose ends are fixed to the frames 26; 27.

Fig. 1 shows a balanced condition of the governor, which is the positionassumed when the pressure transmitted through the pipe 19 conforms towhat is desired in the system to be regulated. In this position,assuming the pressure regulated to be less than the atmosphere, thecombined weight of the suspension bar 30, of the flexible diaphragm andof the atmosphere on the one hand is balanced by the upward pressure ofthe gas in the chamber 20 and by the tipping effort of the balancingbeams 26, 27. In any case arou'gh preliminary adjustment of the deviceis accomplished by sliding the weight to the proper position on its armand fixing the same once for all in that position by means of thebinding screw 34. After this the smaller wei ht 35 can be moved alongits arm 'to 'accomp ish final adjustment where changed conditions in thesystem render it desirable. N otches are preferably provided with whichthe end of the screw36 may engage. By these means the balancing of the aparatus is accomplished to suit anydesired conditions so that thebalancing beam remains horizontal when the gas pressure to be regulatedis correct.

, At each end of each frame 26, 27 a long metal contact is provided, thesame being shown at 37, 38, 39 and 40, and each being preferablyprovided with a' milled edge whereby its position may be adjusted byhand either by providing a thread on the pin for screwing it up and downor otherwise.

Under each of these pins is placed a cup in whichmercury is poured tosuch a level that the pins are not quite immersed, but stand a littleabove the liquid when the balancing beam is horizontal. These cups areshown at 41, 42, 43 and 44. Any conducting llquid.

may be used in these'cu'ps. Similar mercury cups 45, 46 are providedunder the middle of such frame 26, 27 and a depending arm 47 (shown indotted lines in Fig. l) connects each frame permanently with the mercuryin said cups. The wire 48-.electrically. connects the cup 43 with thecup 42, and the wire 49 connects 41 and 44. Wires 50, 51, connect LWOcups 45, 46 with the two armature T rushes of the motor 14 as showninFig. 3. The terminals 52, 53 ofithe motor 14 are connected by theswitch 54 to the electrical mains 55, 56. At 57 and 58'are shown theresistances ordinarily used in the armature and field magnet circuits ofthe motor.

From the description above given it will be obvious that, so long as thegas which enters the pipe 19 remains at the pressure desired and thepins on the balancing beam, do not touch the conducting liquid belowthem, the armature circuit of the motor '14 will not be closed, andthere will be no change in the position of the valves 12 and 13. If,however, the pressure'in the chamcup 41 and resistance 57. This willdrive the motor 14 in such a direction as to increase the opening ofvalves 12 and 13 and thus cause the blowers '3 and 4 to exert moreexhausting action upon the supply main 1. If, on the contrary, thepressure in lthe chamber 20 becomes deficient, the cireuit will beclosed by the armature in the opposite direction and the action of theblowers will be decreased.

The above description conforms to the conditions existing when theapparatus shown in Figs. 1 and '2 is connected by pipe 19 to the supplymain 1. it is, of course, ob vious that, where the pipe 19 is connectedto the delivery main 2, the electrical connections will be reversed.

The arrangement of balancing weights shown in Figs. 1 and 2 is thatadopted when the normal pressure in the chamber 20 is insufiicient tosupport the weight of the dia phragm, the suspension bar and theatmosphere. It is obvious that suitable changes in the weights can bemade for other normal conditions of interior gas pressure.

This is a division of another application of mine, Serial Number 366168filed April 3rd 1907 wherein the general regulated blowing system hereinshown is claimed.

What I claim is- 1'. In combination with a closed chamber, a diaphragmtherein and three pairs of cups containing conducting liquid all on saidchamber; a balancing beam connected by knife-edge connection with saiddiaphragm, four conducting pins carried on opposite ends of said beamand adapted to dip into two of said pairs of cups and two conduct ingarms on opposite sides of the middle of said beam and dipping into theremaining cups, substantially as described.

2. In apparatus of the class described, a

scribed.

EDUARD SCHUL Witnesses:

WM. VALNDORN, M. Knnrrsrs.

